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mpv/libmpcodecs/vf_boxblur.c
albeu 33b62af947 Add the new -vf option wich is the same as vop in reverse order.
Syntax is we decided, so you can give the nomes or not with both
vop and vf. vf take precedence over vop.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9594 b3059339-0415-0410-9bf9-f77b7e298cf2
2003-03-15 18:01:02 +00:00

220 lines
5.7 KiB
C

/*
Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#include "../config.h"
#include "../mp_msg.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
//===========================================================================//
typedef struct FilterParam{
int radius;
int power;
}FilterParam;
struct vf_priv_s {
FilterParam lumaParam;
FilterParam chromaParam;
};
/***************************************************************************/
static int config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static inline void blur(uint8_t *dst, uint8_t *src, int w, int radius, int dstStep, int srcStep){
int x;
const int length= radius*2 + 1;
const int inv= ((1<<16) + length/2)/length;
int sum= 0;
for(x=0; x<radius; x++){
sum+= src[x*srcStep]<<1;
}
sum+= src[radius*srcStep];
for(x=0; x<=radius; x++){
sum+= src[(radius+x)*srcStep] - src[(radius-x)*srcStep];
dst[x*dstStep]= (sum*inv + (1<<15))>>16;
}
for(; x<w-radius; x++){
sum+= src[(radius+x)*srcStep] - src[(x-radius-1)*srcStep];
dst[x*dstStep]= (sum*inv + (1<<15))>>16;
}
for(; x<w; x++){
sum+= src[(2*w-radius-x-1)*srcStep] - src[(x-radius-1)*srcStep];
dst[x*dstStep]= (sum*inv + (1<<15))>>16;
}
}
static inline void blur2(uint8_t *dst, uint8_t *src, int w, int radius, int power, int dstStep, int srcStep){
uint8_t temp[2][4096];
uint8_t *a= temp[0], *b=temp[1];
if(radius){
blur(a, src, w, radius, 1, srcStep);
for(; power>2; power--){
uint8_t *c;
blur(b, a, w, radius, 1, 1);
c=a; a=b; b=c;
}
if(power>1)
blur(dst, a, w, radius, dstStep, 1);
else{
int i;
for(i=0; i<w; i++)
dst[i*dstStep]= a[i];
}
}else{
int i;
for(i=0; i<w; i++)
dst[i*dstStep]= src[i*srcStep];
}
}
static void hBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){
int y;
if(radius==0 && dst==src) return;
for(y=0; y<h; y++){
blur2(dst + y*dstStride, src + y*srcStride, w, radius, power, 1, 1);
}
}
//FIXME optimize (x before y !!!)
static void vBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){
int x;
if(radius==0 && dst==src) return;
for(x=0; x<w; x++){
blur2(dst + x, src + x, h, radius, power, dstStride, srcStride);
}
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
int cw= mpi->w >> mpi->chroma_x_shift;
int ch= mpi->h >> mpi->chroma_y_shift;
mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w,mpi->h);
assert(mpi->flags&MP_IMGFLAG_PLANAR);
hBlur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h,
dmpi->stride[0], mpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power);
hBlur(dmpi->planes[1], mpi->planes[1], cw,ch,
dmpi->stride[1], mpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
hBlur(dmpi->planes[2], mpi->planes[2], cw,ch,
dmpi->stride[2], mpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
vBlur(dmpi->planes[0], dmpi->planes[0], mpi->w,mpi->h,
dmpi->stride[0], dmpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power);
vBlur(dmpi->planes[1], dmpi->planes[1], cw,ch,
dmpi->stride[1], dmpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
vBlur(dmpi->planes[2], dmpi->planes[2], cw,ch,
dmpi->stride[2], dmpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
return vf_next_put_image(vf,dmpi);
}
//===========================================================================//
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
switch(fmt)
{
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
case IMGFMT_YVU9:
case IMGFMT_444P:
case IMGFMT_422P:
case IMGFMT_411P:
return vf_next_query_format(vf, fmt);
}
return 0;
}
static int open(vf_instance_t *vf, char* args){
int e;
vf->config=config;
vf->put_image=put_image;
// vf->get_image=get_image;
vf->query_format=query_format;
vf->priv=malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
if(args==NULL) return 0;
e=sscanf(args, "%d:%d:%d:%d",
&vf->priv->lumaParam.radius,
&vf->priv->lumaParam.power,
&vf->priv->chromaParam.radius,
&vf->priv->chromaParam.power
);
if(e==2){
vf->priv->chromaParam.radius= vf->priv->lumaParam.radius;
vf->priv->chromaParam.power = vf->priv->lumaParam.power;
}else if(e!=4)
return 0;
if(vf->priv->lumaParam.radius < 0) return 0;
if(vf->priv->chromaParam.radius < 0) return 0;
return 1;
}
vf_info_t vf_info_boxblur = {
"box blur",
"boxblur",
"Michael Niedermayer",
"",
open,
NULL
};
//===========================================================================//